This Military Policy is quite useful for any warmonger, as it yields additional File:Civ6Gold.png Gold lumps each time he does what he does best - kill enemies. It will remain useful for the remainder of the game, as long as the condition holds true. Note that the activation of the policy depends on the Era the attacking unit belongs to, as compared to the Era the defending one belongs to, and not of the Era each of their respective civilizations is currently in! So, for example: However, for a peaceful civilization, or for one which faces enemies from the same Era, this Policy is useless.